Mass Energy Relation of the Nonlinear Spinor

The nonlinear spinor fields coupled with the interactive vector and scalar fields are important in the research of the elementary particles. The analysis of this paper shows that the different kind of fields results in different energy-speed relation, the mass-energy relation $E=mc^2$ exactly holds only for the linear part of the coupled fields. The specific energy-speed relations may be useful to identify the concrete particle and interaction models via elaborated experiments